Ranchi: The CBI on Saturday raided the premises of three MLAs and an industrialist, an independent candidate in the cancelled March 30 Rajya Sabha poll, and said it wanted to examine the ballot papers used in the poll to know whom the MLAs had voted for following allgations of horse-trading.

There is a mechanism in Rajya Sabha election by which the choice of a particular MLA can be known.

Separate CBI teams searched the premises of MLAs K N Tripathi (Congress) at Palamau, Suresh Paswan (RJD) at Deogarh and Vishnu Bhaiyya (JMM) at Jamtara, besides their houses here, a senior CBI official said here.

The sleuths also carried out raids in the residences of industrialist R K Agarwal, president of the Singhbhum Chamber of Commerce, in Jamshedpur and his son-in-law Soumitra Saha in Chaibasa, the official said.

The CBI seized Rs four lakh in cash, a car and some documents from the Dumka Road house of Vishnu Bhaiyya, according to an official of the CBI team.

Bhaiyya, who was a former BJP MLA and had fought on JMM ticket in 2009, was not in the house during the raid.

RJD MLA Suresh Paswan was taken by the investigators for questioning after the raid was over at his residences in Deogarh town, Jasidih and Punashi village of the district.

Passbooks and some other documents were seized from Paswan, CBI sources said.

A CBI team seized the laptop and bank papers of Congress MLA K N Tripathi's house at Medininagar, the district headquarters town of Palamau, the sources said.